The value of t 2-dollar bills and f 5-dollar bills is 87. If all ordered pairs (t,f) are equally likely, then find the probability that both t and f are prime.
+36916 Here are the possibilities:
Two integers are relatively prime if they share no common positive factors (divisors) except 1.
I'll do the first two pairs, then let you take it from there.....
17 1 Yes relatively prime pair
15 6 no (common factor of 3)
13 11 ?
11 16
9 21
7 26
5 31
3 36
1 41
